Staple length and strength – we use the average staple length, staple strength and position of break to assess the performance of apparel wools in the worsted processing system

Bulk – this measures the fibers’ ability to fill space and also relates to resilience, which are important properties for applications such as carpets, futons and insulation

Fiber curvature – relates to bulk, compressibility and crimp and is cited as an influence on processing

Fiber diameter distribution – information about aspects of the diameter distribution may affect assessments of comfort and processing performance

Diameter-length profile – measuring the average diameter at increments along the length of wool staples may be important for managing sheep flocks and, in the future, may assist in predicting processing performance

Medullation – refers to the hollow fibers in wool and other animal fibers, which causes uneven dye uptake and adversely affects appearance in apparel wools (but may be desirable for some carpet types)

We can also test greasy wool samples using a variety of low-cost fleece testing methods that are specifically designed for animal selection purposes.

To verify the quality and quantity of greasy wool across a range of criteria, contact SGS now to ask about our independent testing services.